第46卷第4期 2016年4月
不工样架
PAINT&COATINGS INDUSTRY
Vol.46No.4 Apr.2016
乙烯-醋酸乙烯共聚物改性水泥基防锈涂料的研究柳嘉伟1,2.焦宝祥1.2周启兆3赵景川4，贾海2金益楠2（1.江苏大学材料科学与工程学院，江苏镇江2120132.盐城工学院材料工程学院，江苏盐城224051：3.盐城市交通运输局，江苏盐城224000：4.安徽理工大学材料科学与工程学院，安徽淮南232001）
摘要：利用乙烯-醋酸乙烯共聚物（EVA）改性水泥制备一种力学性能和防锈性能兼顾的涂料，以解决沿海复杂环境下钢筋混凝土施工过程中钢筋锈蚀的问题。研究了EVA掺量对涂料的黏度、涂刷性能及其对钢筋握裹力的影响：进行了EVA改性水泥基防锈涂料与水泥净浆防锈涂料对钢筋防护性能的中性盐雾对比试验。研究表明：当EVA掺量为13%（以水泥质量计）时，EVA改性水泥基防锈涂料的握裹力达到了10.4MPa，高于裸钢筋表面直接浇筑混凝土的握裹力。涂料的流动性和涂刷性能好，满足施工要求，该涂料的防锈性能优于水泥净浆涂料。
关键词：水泥基涂料；EVA；握裹力；防锈性能
中图分类号：TO635.2
文献标识码：A
文章编号：0253-4312（2016)04-0039-06
PreparationofEVA-ModifiedCement-BasedAntirustCoatings Liu Jiawei'.2,Jiao Baoxiang-2,Zhou Qizhao,Zhao Jingchuan,Jia Hui?2,Jin Yinan?
(1.College of Materials Science and Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013,China: 2.College of Materials Engineering,Yancheng Institute of Technology,Yancheng,Jiangsu 224051, China;
3.Yancheng Transport Bureau,Yancheng,Jiangsu224000,China;
4.AnhuiUninersityof Science andEngineering,Huainan,Anhui232001,China)
Abstract:In order to solve the rusting problem of steel bar in reinforced concrete construc-tion at coastal environment, the EVA(ethylene-vinvl acetate copolymer)-modified cement-based coatings with both mechanical properties and antirust performance was prepared. The in-fluence of EVA content on the viscosity,coatability of coatings and gripping force between the coated steel bar and concrete was studied. And the salt spray test of EVA-modified antirust coatings is carried out and compared with the EVA-free antirust coatings. The results show that the antirust coatings comprising 13% (based on weight of cement) EVA enable the grip-ping force between the coated steel bar and concrete up to 10. 4 MPa, which is higher than that between bare steel bar and concrete. Meanwhile, the EVA-modified antirust coatings have good fluidity and coatability with better antirust performance than EVA-free antirust coatings.
KeyWords:cement-based coatings;EVA; gripping force; antirust performance
[基金项目】江苏省科技厅社会发展项目（BE2015659)；江苏省协同创新中心项目（GX2015302)；江苏省大学生创新项目
(201510305068H)
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工艺技术